Thomas e



(No Model.)

T. E. HILL.

STEAM MUFFLER.

No. 384,364. Patented June 12, 1888.

J INVETTTOR BY 1 1%;

ATTORNEYS.

UNITED STATES PATENT OFFICE.

THOMAS E. HILL, OF RAH\VAY, NEW JERSEY.

STEAM MU FFLER.

BPECIPICATION Forming part of Letters Patent No. 38 5,1364, dated June 12, 1888.

Seri1lNo.255,966. (No model.)

To all whom it vita-y concern:

Be it known that I, THOMAS E. HILL, of Rahway, in the county of Union and State of New Jersey, have invented a new and Improved Steam-Muffler, of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional elevation of my improved steam-muffler. Fig. 2 is a sectional detailed view showing a modification of the perforated mutiler-plates. Fig. 3 is a sectional plan view taken 011 the line :0 x of Fig. 1, and Fig. 4 is a plan view of the top plate, M.

The invention will first be described in connection with the drawings and then pointed out in the claim.

A represents the hollow base of cast metal provided with the valve B, the same as in my patent, No. 859,389, dated March 15, 1887. To the base A is screwed the outer shell or casing,0. D represents the upper, and D the lower, annular and perforated muffler-plates. The plate D is formed integral with the central tube, E, and outer flange, D which latter fits in the shell 0 and rests upon the upper end of the base A and holds the tube E in place. The plates D are spaced one above the other by the short interposed tubes (I, placed upon the bolts Z), passed through the whole se ries of plates, as shown in Fig. l. \Vithiu the tube E is placed the spring F, which rests upon the flange G of the rod G, which rests upon the center of the valve B. On the top of the spring F is placed the annular washer H,which may be depressed by the hollow and externally screwthreaded sleeve J for adjusting the pressure of the spring upon the valve B.

The sleeve J works in a central screw-threaded opening in the top 0 of the casing O. The rod G passes up through the sleeve J and has the lever K connected to it, which lever is fulcrumed in the stud j and may be weighted at its outer end to prescribe the pressure of steam at which the valve B will be lifted and permit the steam to blow off. The upper end of sleeve J and rod G are covered by the cup L, which rests upon the star-shaped plate M, which rests upon the top 0 of the casing O. The top 0 is perforated, as shown in Fig. 1. The cap L is slotted at Z to receive the lever K. The lower edge of the casing O is formed with notches m for the application of awrench for screwing it tightly upon the base A, and the casing is provided with a set-screw for holding the casing fixed to the base, and a fiat seat, i, is formed in the base A for the inner end of the screw N.

Instead of using the short tubes a for spacing the muflier-plates D, I may form them with flanges p p, as shown in Fig. 2, and I may form the bottom plate with the top and bottom flanges, q q, as shown in said figure.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The base A, fitted with the valve B and provided with the casing G, in combination with the inner casing, E, spring F, rod G, perforated plates D, surrounding the casing E and held by rods Z) and spaced by the short intermediate tubes, a, placed upon the rods Z) between the said perforated plates D, substantially as described.

THOMAS E. HILL.

Vitnesses:

H. A. Wnsr, O. SnnowIoK. 

